OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application
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/*# K8 O* {4 q) w# {9 x( y( t+ K
* edma_test.c( U. \' O! a* r7 I# L
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE& T2 |# [# d7 @& h- x
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.! J0 n: j, s/ D
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/9 y2 v3 i( D: l0 z0 T
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* This program is free software; you can redistribute it and/or1 t5 L" i% U3 \! p
* modify it under the terms of the GNU General Public License as& J" Q8 ?; U! X9 b5 F* E
* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty) n6 U$ P" v. |5 A; A: r+ P
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/ K( z5 M- G& L# q% u( v) f: M
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#include <linux/module.h>8 ~% ?. B3 W$ b9 n9 V% O9 q. T, K7 H1 Z
#include <linux/init.h> A! F( R e+ P/ f9 r4 c
#include <linux/errno.h>8 k; Q) E7 Q$ N( W( V& T. h3 [1 Y
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>' R/ W- A4 s/ u5 P
#include <linux/moduleparam.h>" Y! W* G7 c0 y) b! `. z
#include <linux/sysctl.h>
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#include <linux/mm.h>" u! A* T2 m. G' r$ z
#include <linux/dma-mapping.h>
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#include <mach/memory.h>! |& t( F- s4 Q# i: t8 ^
#include <mach/hardware.h>" c) I; e$ u/ R* H" V# `
#include <mach/irqs.h>% _/ n. G. M* c0 v5 J8 }: i
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG$ W$ Z2 Q+ J' K( K- t
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)/ U0 P. C D1 I
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)% Q. P8 s4 S! t" t, H
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)7 Y9 J1 a& n/ [+ S. ]0 o
#else9 N X8 W) Z# @! a) R4 s8 B# t
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT1 n* z5 _$ E! P" B" h8 \
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 36 t. m8 u$ r5 F$ }5 a
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22- P+ V7 ^# H/ y" \0 h$ T) E R' W, @
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;: m6 E0 h/ Z/ I
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);$ o9 X* G& s/ m, H
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" _4 I/ e. ^3 o8 Z
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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dma_addr_t dmaphyssrc1 = 0;) V* N; w# a/ \7 `
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;. M8 E/ }! V# X' B% | n) o
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char *dmabufsrc1 = NULL;2 R9 L3 e* u5 v; x4 ?3 l
char *dmabufsrc2 = NULL;: J! D1 Q3 A6 T$ P1 X' A+ F
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;6 l% |8 u4 Z0 U. R
static int bcnt = 8;$ @$ a- N( Z" x1 }* n& C* b
static int ccnt = 8;3 j1 @+ E- X( {$ [% f* A5 l
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);
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module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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